128 lines
4.0 KiB
Diff
128 lines
4.0 KiB
Diff
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From 127961742cf7992f6989c6e89a18ab6d8f0b297f Mon Sep 17 00:00:00 2001
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From: Patrick Rudolph <patrick.rudolph@9elements.com>
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Date: Thu, 3 Dec 2020 13:44:55 +0100
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Subject: [PATCH 20/22] grub-core/bus/usb/usbhub: Add xHCI non root hub support
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Tested on Intel PCH C246, the USB3 hub can be configured by grub.
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Issues:
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* USB3 devices connected behind that hub are sometimes not detected.
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Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
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---
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grub-core/bus/usb/usbhub.c | 38 +++++++++++++++++++++++++++++++++-----
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include/grub/usbdesc.h | 1 +
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include/grub/usbtrans.h | 4 ++++
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3 files changed, 38 insertions(+), 5 deletions(-)
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diff --git a/grub-core/bus/usb/usbhub.c b/grub-core/bus/usb/usbhub.c
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index b4b3a1a61..e96505aa9 100644
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--- a/grub-core/bus/usb/usbhub.c
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+++ b/grub-core/bus/usb/usbhub.c
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@@ -148,19 +148,32 @@ grub_usb_hub_add_dev (grub_usb_controller_t controller,
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return dev;
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}
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-
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+static grub_usb_err_t
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+grub_usb_set_hub_depth(grub_usb_device_t dev, grub_uint8_t depth)
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+{
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+ return grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_OUT
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+ | GRUB_USB_REQTYPE_CLASS
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+ | GRUB_USB_REQTYPE_TARGET_DEV),
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+ GRUB_USB_HUB_REQ_SET_HUB_DEPTH, depth,
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+ 0, 0, NULL);
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+}
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+
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static grub_usb_err_t
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grub_usb_add_hub (grub_usb_device_t dev)
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{
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struct grub_usb_usb_hubdesc hubdesc;
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grub_usb_err_t err;
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+ grub_uint16_t req;
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int i;
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+ req = (dev->speed == GRUB_USB_SPEED_SUPER) ? GRUB_USB_DESCRIPTOR_SS_HUB :
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+ GRUB_USB_DESCRIPTOR_HUB;
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+
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err = grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_IN
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| GRUB_USB_REQTYPE_CLASS
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| GRUB_USB_REQTYPE_TARGET_DEV),
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- GRUB_USB_REQ_GET_DESCRIPTOR,
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- (GRUB_USB_DESCRIPTOR_HUB << 8) | 0,
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+ GRUB_USB_REQ_GET_DESCRIPTOR,
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+ (req << 8) | 0,
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0, sizeof (hubdesc), (char *) &hubdesc);
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if (err)
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return err;
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@@ -183,6 +196,19 @@ grub_usb_add_hub (grub_usb_device_t dev)
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return GRUB_USB_ERR_INTERNAL;
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}
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+ if (dev->speed == GRUB_USB_SPEED_SUPER)
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+ {
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+ grub_uint8_t depth;
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+ grub_uint32_t route;
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+ /* Depth maximum value is 5, but root hubs doesn't count */
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+ for (depth = 0, route = dev->route; (route & 0xf) > 0; route >>= 4)
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+ depth++;
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+
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+ err = grub_usb_set_hub_depth(dev, depth);
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+ if (err)
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+ return err;
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+ }
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+
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/* Power on all Hub ports. */
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for (i = 1; i <= hubdesc.portcnt; i++)
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{
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@@ -637,7 +663,9 @@ poll_nonroot_hub (grub_usb_device_t dev)
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int split_hubaddr = 0;
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/* Determine the device speed. */
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- if (status & GRUB_USB_HUB_STATUS_PORT_LOWSPEED)
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+ if (dev->speed == GRUB_USB_SPEED_SUPER)
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+ speed = GRUB_USB_SPEED_SUPER;
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+ else if (status & GRUB_USB_HUB_STATUS_PORT_LOWSPEED)
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speed = GRUB_USB_SPEED_LOW;
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else
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{
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@@ -651,7 +679,7 @@ poll_nonroot_hub (grub_usb_device_t dev)
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grub_millisleep (10);
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/* Find correct values for SPLIT hubport and hubaddr */
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- if (speed == GRUB_USB_SPEED_HIGH)
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+ if (speed == GRUB_USB_SPEED_HIGH || speed == GRUB_USB_SPEED_SUPER)
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{
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/* HIGH speed device needs not transaction translation */
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split_hubport = 0;
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diff --git a/include/grub/usbdesc.h b/include/grub/usbdesc.h
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index bb2ab2e27..1697aa465 100644
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--- a/include/grub/usbdesc.h
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+++ b/include/grub/usbdesc.h
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@@ -30,6 +30,7 @@ typedef enum {
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GRUB_USB_DESCRIPTOR_ENDPOINT,
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GRUB_USB_DESCRIPTOR_DEBUG = 10,
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GRUB_USB_DESCRIPTOR_HUB = 0x29,
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+ GRUB_USB_DESCRIPTOR_SS_HUB = 0x2a,
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GRUB_USB_DESCRIPTOR_SS_ENDPOINT_COMPANION = 0x30
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} grub_usb_descriptor_t;
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diff --git a/include/grub/usbtrans.h b/include/grub/usbtrans.h
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index 039ebed65..d6c3f71dc 100644
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--- a/include/grub/usbtrans.h
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+++ b/include/grub/usbtrans.h
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@@ -110,6 +110,10 @@ enum
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GRUB_USB_REQ_SET_INTERFACE = 0x0B,
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GRUB_USB_REQ_SYNC_FRAME = 0x0C
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};
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+enum
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+ {
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+ GRUB_USB_HUB_REQ_SET_HUB_DEPTH = 0x0C,
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+ };
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#define GRUB_USB_FEATURE_ENDP_HALT 0x00
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#define GRUB_USB_FEATURE_DEV_REMOTE_WU 0x01
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--
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2.39.2
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